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Laplandite-(Ce)

Big Photo

Yubileinaya (Yubileinoye; Jubilejnaja) pegmatite, Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
© DV Minerals

Show Laplandite-(Ce) Photos (3)
Formula:
Na
 
4
CeTiPO
 
4
Si
 
7
O
 
18
·5H
 
2
O
Colour:gray-white, pale yellow, ...Hardness:2 - 3
This page provides mineralogical data about Laplandite-(Ce).

Classification of Laplandite-(Ce)

IMA status:Approved
Strunz 8th edition ID:8/G.11-10
Nickel-Strunz 10th (pending) edition ID:9.DJ.10

9 : SILICATES (Germanates)
D : Inosilicates
J : Inosilicates with 4-periodic double and triple chains
Dana 8th edition ID:78.7.9.1

78 : Unclassified Silicates
7 :
Hey's CIM Ref.:17.6.10

17 : Silicates Containing other Anions
6 : Silicates with phosphate
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Type Occurrence of Laplandite-(Ce)

Type Locality:Yubileinaya (Yubileinoye; Jubilejnaja) pegmatite, Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia

Physical Properties of Laplandite-(Ce)

Colour:gray-white, pale yellow, pale blue
Hardness (Mohs):2 - 3

Crystallography of Laplandite-(Ce)

Morphology:Radial-fibrous aggregates.

Optical Data of Laplandite-(Ce)

Type:Biaxial (-)
RI values: nα = 1.568 nβ = 1.584 nγ = 1.585
2V:Measured: 28° , Calculated: 26°
Maximum Birefringence:δ = 0.017

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:r > v strong

Chemical Properties of Laplandite-(Ce)

Formula:
Na
 
4
CeTiPO
 
4
Si
 
7
O
 
18
·5H
 
2
O
Essential elements:Ce, H, Na, O, P, Si, Ti
All elements listed in formula:Ce, H, Na, O, P, Si, Ti

Relationship of Laplandite-(Ce) to other Species

Related Minerals - Nickel-Strunz Grouping):
9.DJ.05Narsarsukite
Na
 
2
(Ti,Fe)Si
 
4
(O,F)
 
11
9.DJ.15Caysichite-(Y)
Y
 
2
(Ca,Gd)
 
2
Si
 
4
O
 
10
(CO
 
3
)
 
3
·4H
 
2
O
9.DJ.20Seidite-(Ce)
Na
 
4
(Ce,Sr)
 
2
Ti[(O,OH,F)
 
5
|Si
 
8
O
 
18
(OH)]·5H
 
2
O
9.DJ.25Carlosturanite
(Mg,Fe,Ti)
 
21
(Si,Al)
 
12
O
 
28
(OH)
 
34
9.DJ.30Jonesite
Ba
 
4
(K,Na)
 
2
Ti
 
4
Al
 
2
[O|(SiO
 
4
)
 
2
|Si
 
3
O
 
9
]
 
2
 · 6H
 
2
O
Related Minerals - Hey's Index Grouping:
17.6.1Nagelschmidtite
Ca
 
7
[PO
 
4
|SiO
 
4
]
 
2
17.6.2Perhamite
(Ca,Sr)
 
3
Al
 
7.7
Si
 
3
P
 
4
O
 
23.5
(OH)
 
14.1
·8H
 
2
O
17.6.3Viséite
17.6.4Phosinaite
17.6.5Clinophosinaite
Na
 
12
(Ca,Sr)
 
4
(PO
 
4
)
 
4
(Si
 
4
O
 
12
)
17.6.6Karnasurtite-(Ce)
(Ce,La,Th)(Ti,Nb)(Al,Fe)(Si,P)
 
2
O
 
7
(OH)
 
4
·3H
 
2
O
17.6.7Lomonosovite
Na
 
5
Ti
 
2
[O
 
2
|PO
 
4
|Si
 
2
O
 
7
]
17.6.8Bornemanite
BaNa
 
4
Ti
 
2
NbSi
 
4
O
 
17
(F,OH)·Na
 
3
PO
 
4
17.6.9Sobolevite
Na
 
12
Ca(NaCaMn)Ti
 
2
(Si
 
2
O
 
7
)
 
2
(PO
 
4
)
 
4
O
 
3
F
 
3
17.6.11 Vunonnemite
Na
 
5
TiNb
 
3
Si
 
6
O
 
25
F
 
2
·2Na
 
3
PO
 
4
17.6.12Saryarkite-(Y)
Ca(Y,Th)Al
 
5
(SiO
 
4
)
 
2
(PO
 
4
,SO
 
4
)
 
2
(OH)
 
7
·6H
 
2
O
17.6.13Steenstrupine-(Ce)
Na
 
14
Mn
2+
2
(Fe
3+
 
,Mn
3+
 
)
 
2
Ce
 
6
(Zr,Th)[(OH)
 
2
|HPO
 
4
|(PO
 
4
)
 
6
|(Si
 
6
O
 
18
)
 
2
]·2H
 
2
O
17.6.14Waylandite
(Bi,Ca)Al
 
3
[(OH)
 
6
|(PO
 
4
,SiO
 
4
)
 
2
]
17.6.15Britholite-(Ce)
Ca
 
2
(Ce,Ca)
 
3
[(OH,F)|(SiO
 
4
,PO
 
4
)
 
3
]
17.6.16Britholite-(Y)
Ca
 
2
(Y,Ca)
 
3
[(OH,F)|(SiO
 
4
,PO
 
4
)
 
3
]
17.6.17Eylettersite
(Th,Pb)Al
 
3
[(OH)
 
6
|(PO
 
4
,SiO
 
4
)
 
2
] ?

Other Names for Laplandite-(Ce)

Synonyms:
IMA1974-005

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Laplandite-(Ce)

Reference List:American Mineralogist (1975): 60: 487.

Internet Links for Laplandite-(Ce)

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    Localities for Laplandite-(Ce)

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Lovozero Massif
            • Karnasurt Mt
    Mineral and/or Locality
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